Plasma Gas
Mostrando 1-12 de 405 artigos, teses e dissertações.
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1. A Physical Study to Explain Response Differences between the BID and FID Detectors for PAHs and Pesticides
The dielectric barrier discharge ionization detector (BID) is one of the most modern detectors commercially available for gas chromatography (GC). Its technology based on the sample ionization through the energy released from the helium plasma generation process gives it the ability to act as a universal detector and a greater response to various types of co
Journal of the Brazilian Chemical Society. Publicado em: 2022
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2. Alternative Approaches Applied to Inductively Coupled Plasma Techniques: Multi-Flow and Two-Flow Calibration
Multi-flow calibration (MFC) is based on monitoring the analytical signal from a single calibration standard solution at several different nebulization gas flow rates (Q), which normalizes plasma conditions and minimizes matrix effects. In the present study, MFC was evaluated, for the first time, applied to inductively coupled plasma optical emission spectro
J. Braz. Chem. Soc.. Publicado em: 2021-04
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3. Verificação da irradiação plasmática atmosférica como método alternativo de controle para Tribolium castaneum (Herbst)
Resumo Plasma de radiofrequência, plasma de RF, tem sido empregado em diversas aplicações industriais. Experimentos de laboratório foram conduzidos para determinar o potencial de plasma de RF no controle de Tribolium castaneum (Herbst). Foram examinados nesse estudo três variáveis de tratamento: (1) plasma de hélio ou argônio; (2) dois níveis de pot
Braz. J. Biol.. Publicado em: 2020-09
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4. Optimization of New Sample Preparation Technique for the Determination of Methadone and Codeine in Plasma Sample by GC-FID
A continuous sample drop flow microextraction (CSDF-ME) technique was modified for the pretreatment of plasma samples in the determination of methadone and codeine. The limit of detection and linear range for methadone were 15.0 µg L-1 and 0.1-10.0 mg L-1, respectively. The detection limit and linear range for codeine were 25.0 µg L-1 and 0.2-15.0 mg L-1,
J. Braz. Chem. Soc.. Publicado em: 2020-03
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5. Enhanced external counterpulsation improves cardiac function in Beagles after cardiopulmonary resuscitation
The aim of this study was to investigate the influence of enhanced external counterpulsation (EECP) on the cardiac function of beagle dogs after prolonged ventricular fibrillation. Twenty-four adult male beagles were randomly divided into control and EECP groups. Ventricular fibrillation was induced in the animals for 12 min, followed by 2 min of cardiopulmo
Braz J Med Biol Res. Publicado em: 2020-01
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6. Performance Parameters, Plasma Lipid Status, and Lymphoid Tissue Fatty Acid Profile of Broiler Chicks Fed Camelina Cake
ABSTRACT The effects of dietary camelina cake (CAMC) on broiler chicks’growth performance, plasma lipid status and fatty acid profile (FA) of lymphoid organs were evaluated. Six hundred broilers (3-week-old, Cobb 500) were randomly allotted for 20 days in a feeding trials into 2 groups: control (C; corn-soybean meal-canola meal basal diet) and experimental
Braz. J. Poult. Sci.. Publicado em: 20/12/2019
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7. Influence of the Pre-Treatments and Process Temperature on the Adhesion of TiN Films Deposited by PBII&D Over Nitrided Austenitic Stainless Steel
In this work the influence of pre-treatment cleaning processes in the adhesion of TiN films deposited by the plasma based ion implantation and deposition (PBII&D) process over plasma nitrided AISI 316L stainless steel was investigated, varying the gas composition, the duration of the sputtering process and the temperature in the same deposition chamber. The
Mat. Res.. Publicado em: 28/10/2019
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8. Verification of atmospheric plasma irradiation as an alternative control method for Tribolium castaneum (Herbst)
Resumo Plasma de radiofrequência, plasma de RF, tem sido empregado em diversas aplicações industriais. Experimentos de laboratório foram conduzidos para determinar o potencial de plasma de RF no controle de Tribolium castaneum (Herbst). Foram examinados nesse estudo três variáveis de tratamento: (1) plasma de hélio ou argônio; (2) dois níveis de pot
Braz. J. Biol.. Publicado em: 21/10/2019
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9. Hematological, biochemical, and blood gas alterations of goat whole blood stored in CPDA-1 and CPD/SAG-M plastic bags
RESUMO: O objetivo deste estudo foi avaliar as alterações hematológicas, bioquímicas e hemogasométricas do sangue total de caprinos armazenado em diferentes bolsas de sangue. Foram utilizados sete caprinos machos, adultos, sem raça definida, pesando 62±1,8kg. Coletou-se 900 mL de sangue total de cada animal, em duas bolsas plásticas tipos CPDA-1 (ci
Cienc. Rural. Publicado em: 07/10/2019
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10. PHNSNCL4-N SUPPORTED ON ACTIVATED CARBON AS NOVEL TIN-BASED CATALYSTS FOR ACETYLENE HYDROCHLORINATION
In this work, a series of PhnSnCl4-n (n = 1, 2, 3, and 4) based catalysts were prepared by incipient wetness impregnation using activated carbon (AC) as support and triphenyltin chloride (Ph3ClSn) and tin(IV) chloride (SnCl4) as Sn precursors. The obtained catalysts were systematically characterized by X-ray diffraction (XRD), N2 physisorption, Scanning elec
Quím. Nova. Publicado em: 26/08/2019
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11. Influence of the Gas Pressure of Plasma Nitriding on the Structural, Mechanical and Tribological Surface Properties of AISI 316L
In this paper, the influence of gas nitriding (80% H2-20% N2) pressure (between 3 and 7 Torr) on the modification of surface properties of AISI 316L stainless steel is examined. The structural, mechanical, tribological and electrochemical properties of the layer produced in disk samples were studied. The samples’ characteristics were determined by scanning
Mat. Res.. Publicado em: 15/07/2019
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12. Changing the characteristics of the nitrided layer using three different plasma configurations
ABSTRACT Direct current (DC) plasma nitriding offers some disadvantages, especially in parts with complex geometries, where the presence of edges is significant, such as gears, molds, and needle punched parts are strongly affected by this effect, leading to irregular formation of nitrided layers and high variation in surface hardness. To solve these problems
Matéria (Rio J.). Publicado em: 10/06/2019